12 stone ( 12 x 14 lb ), or about 170 lb.
180 lb = 12 st and 12.00 lb
12st 3lbs is about 77.6 (77.5643) kilograms.
There are 14 pounds in a stone. So 14 x 12 = 168 pounds Algebraic Steps / Dimensional Analysis Formula12 st*14 lb 1 st=168 lb
14 lb = 1 stone 14 x 11 = 154 So 11 stone 9 lb
168 lbs = 12 stone
10 stone 12 lb = 10 * 14 + 12 = 152 lb. Conversion factor is 0.45359 kg per lb. 152 lb * 0.45359 = 68.946 kg. An easy way to do conversions like this is to just type them into Google.
69.85322498 kg, algebraic steps below: 11 st*14 lb 1 st*1 kg 2.2046226218 lb=69.85322498 kg
138 pounds = 9 stone 12 pounds
205.8 lb = 14.7 stone
A stone is 9.35714 lb.
2 stone 6 lb.